@inproceedings{jürgen2010a,
title={A normality criterion involving rotations and dilations in the argument},
author={Jürgen Grahl},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203631886379015},
booktitle={Arkiv for Matematik},
volume={50},
number={1},
pages={89-110},
year={2010},
}
Jürgen Grahl. A normality criterion involving rotations and dilations in the argument. 2010. Vol. 50. In Arkiv for Matematik. pp.89-110. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203631886379015.